White PVC Spring Check Valves, Slip Ends (SLIP) White Get extra pressure for back-washing

Get extra pressure for back-washing filters OR extra flow for a water feature

CrystalClear® KnockOut™ PLUS is an all natural

upon request we will pre-drill your skimmer so that any of the listed pumps and this discharge kit will easily fit

Yeast Culture

White PVC Spring Check Valves, Slip Ends (SLIP) White Get extra pressure for back-washingCheck valves are essential when using a waterfall filter in conjunction with a pond skimmer. The check valve will prevent water in the filter from back flowing into the skimmer when the pump is switched off and keep water in bogs when the pump is turned off and other purposes. Check valves are also essential when an external pump is being used. The check valve prevents the water from draining back into the pond or reservoir, keeping the external pump